Fast, friendly, functional!

 

Gleam is a statically typed functional programming language for building scalable concurrent systems. It compiles to Erlang and has straightforward interop with other BEAM languages such as Erlang, Elixir and LFE.

It looks like this:

pub type Tree(value) {
  Leaf(value)
  Node(Tree(value), Tree(value))
};

pub fn any(tree: Tree(a), check: fn(a) -> Bool) -> Bool {
  case tree {
    Leaf(i) -> check(i)
    Node(left, right) -> any(left, check) || any(right, check)
  }
}

pub fn has_even_leaf(tree: Tree(Int)) -> Bool {
  any(tree, fn(i) {
    i % 2 == 0
  })
}

For more information see the Gleam website: https://gleam.run.

Sponsors

Gleam is kindly supported its sponsors. If you would like to support Gleam please consider sponsoring its development on GitHub.

These people are sponsoring at least $10 a month, enabling further Gleam development.

• Parker Selbert
• Quinn Wilton
• ontofractal
• John Palgut